1005343420423 has 16 divisors (see below), whose sum is σ = 1018872770944. Its totient is φ = 991880847360.

The previous prime is 1005343420391. The next prime is 1005343420429. The reversal of 1005343420423 is 3240243435001.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1005343420423 - 2⁵ = 1005343420391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005343420429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 144421663 + ... + 144428623.

It is an arithmetic number, because the mean of its divisors is an integer number (63679548184).

Almost surely, 2^{1005343420423} is an apocalyptic number.

1005343420423 is a deficient number, since it is larger than the sum of its proper divisors (13529350521).

1005343420423 is an equidigital number, since it uses as much as digits as its factorization.

1005343420423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11482.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 1005343420423 its reverse (3240243435001), we get a palindrome (4245586855424).

The spelling of 1005343420423 in words is "one trillion, five billion, three hundred forty-three million, four hundred twenty thousand, four hundred twenty-three".